void ImageViewer::setFile(const QString &fileName)
{
QGLTexture2D *tex = body->material()->texture();
if (tex) {
tex->release();
tex->deleteLater();
}
tex = new QGLTexture2D;
tex->setImage(QImage(fileName.isEmpty() ? defaultImage : fileName));
body->material()->setTexture(tex);
}
void QGeoTileCache::GLContextAvailable()
{
QMutexLocker ml(&cleanupMutex_);
/* Throttle the cleanup to 10 items/frame to avoid blocking the render
* for too long. Normally only 6-20 tiles are on screen at a time so
* eviction rates shouldn't be much higher than this. */
int todo = qMin(cleanupList_.size(), 10);
for (int i = 0; i < todo; ++i) {
QGLTexture2D *texture = cleanupList_.front();
if (texture) {
texture->release();
texture->cleanupResources();
delete texture;
}
cleanupList_.pop_front();
}
}
void Mg3dScene::drawText(QGLPainter * painter, const QStringList& str)
{
QString longest;
const int minWidth = 100;
for (int i = 0; i < str.size(); ++i)
{
if(str[i].length()>longest.length())
longest = str[i];
}
QFont f = font();
f.setPointSize(11);
QFontMetrics metrics(f);
QRect rect = metrics.boundingRect(longest);
if(rect.width()<minWidth)
rect.setWidth(minWidth);
QImage image(
QSize(rect.width()+10,rect.height()*str.size()+10),
QImage::Format_ARGB32
);
image.fill(0);
QPainter p2(&image);
p2.setFont(f);
p2.setPen(Qt::yellow);
p2.setRenderHint(QPainter::TextAntialiasing);
for(int y= 0;y<str.size();++y)
p2.drawText(
0 ,
((y+1) * rect.height()),
" "+str[y]
);
p2.end();
QGLTexture2D texture;
texture.setImage(image);
texture.bind();
glDisable(GL_DEPTH_TEST);
d_ptr->textureDisplayShader.setActive(painter,true);
QVector2D size((float)image.width()/width(),
(float)image.height()/height());
QVector2D center(
remapVal(size.x()/2,0,1,-1,1),
remapVal(1-size.y()/2,0,1,-1,1));
d_ptr->textureDisplayShader.setCenter(center);
d_ptr->textureDisplayShader.setSize(size);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,texture.textureId());
drawFboVertices(painter);
d_ptr->textureDisplayShader.setActive(painter,false);
texture.release();
glEnable(GL_DEPTH_TEST);
}
